Introduction: in France, smoking is the first cause of death and morbidity avoidable. Youth tobacco control is a priority wich must pass through in inovative concepts adapted to them and their communication. It’s in this perspective that the second edition of this challenge inter-high schools led in the form of a reward challenge was organised in ten Gironde high schools. Objectives: rate the proportion of high-school students who have positively modified their tobacco consumption at one month of this challenge and identify the obstacles of a deployment on a largest scale. Material and method: quantitative epidemiology study, observational , transversal, multicentric. Carried out over one month among smoking participants students of the last year grade from ten high school in Gironde. Results: 190 smokers has participed to this challenge, among them 63 (33%) has stopped smoking and 88 ( 46%) has reduced their tobacco consumption. The percentage of smokers who positively modified their consumption was 79%. Conclusion: this challenge had a beneficial effect on tobacco consumption for more than three-quarters of the participants students. It’s a promising and improvable device, that could be proposed on a larger scale.